Can't maximize Instant DVD Recorder to run full screen

This is normal. Instant DVD Recorder, when “maximized,” will display in a window that is 800 x 600. If you are running a physical screen resolution larger then 800 x 600, such as 1280 x 1024, 1600 x 1200, etc., then the Instant DVD Recorder software, when maximized, will be centered in the middle of the screen in a windows that is 800 x 600.